How Is the Increase in Corn and Soy Production Related

How is the increase in corn and soy production related to livestock production for meat?

A) Much of the grain produced is fed to animals raised for meat.
B) The same farms that grow the corn and soy also raise livestock.
C) There is no relationship between the two variables.
D) Corn and soy products are often eaten by people in the same meals as meat products.
E) Livestock are rotated into the fields where corn and soy are produced to fertilize the fields.